1################################################################################ 2# 3# Build the ext2 root filesystem image 4# 5################################################################################ 6 7ROOTFS_EXT2_SIZE = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_SIZE)) 8ifeq ($(BR2_TARGET_ROOTFS_EXT2)-$(ROOTFS_EXT2_SIZE),y-) 9$(error BR2_TARGET_ROOTFS_EXT2_SIZE cannot be empty) 10endif 11 12# If SIZE is AUTO, which mean shrink the filesystem to the minimum size. 13# Suppose 2G is big enough for buildroot ext filesystem, we then shrink 14# it after rootfs img packed. 15ifeq ($(ROOTFS_EXT2_SIZE),AUTO) 16ROOTFS_EXT2_SIZE = 2G 17define ROOTFS_EXT2_SHRINK 18 $(HOST_DIR)/sbin/resize2fs -M $(BINARIES_DIR)/rootfs.ext2 19 $(HOST_DIR)/sbin/e2fsck -fy $(BINARIES_DIR)/rootfs.ext2 20 $(HOST_DIR)/sbin/tune2fs -m $(BR2_TARGET_ROOTFS_EXT2_RESBLKS) $(BINARIES_DIR)/rootfs.ext2 21 $(HOST_DIR)/sbin/resize2fs -M $(BINARIES_DIR)/rootfs.ext2 22endef 23endif 24 25ROOTFS_EXT2_MKFS_OPTS = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS)) 26 27# qstrip results in stripping consecutive spaces into a single one. So the 28# variable is not qstrip-ed to preserve the integrity of the string value. 29ROOTFS_EXT2_LABEL = $(subst ",,$(BR2_TARGET_ROOTFS_EXT2_LABEL)) 30#" Syntax highlighting... :-/ ) 31 32ROOTFS_EXT2_OPTS = \ 33 -d $(TARGET_DIR) \ 34 -r $(BR2_TARGET_ROOTFS_EXT2_REV) \ 35 -N $(BR2_TARGET_ROOTFS_EXT2_INODES) \ 36 -m $(BR2_TARGET_ROOTFS_EXT2_RESBLKS) \ 37 -L "$(ROOTFS_EXT2_LABEL)" \ 38 $(ROOTFS_EXT2_MKFS_OPTS) 39 40ROOTFS_EXT2_DEPENDENCIES = host-e2fsprogs 41 42define ROOTFS_EXT2_CMD 43 rm -f $@ 44 $(HOST_DIR)/sbin/mkfs.ext$(BR2_TARGET_ROOTFS_EXT2_GEN) $(ROOTFS_EXT2_OPTS) $@ \ 45 "$(ROOTFS_EXT2_SIZE)" \ 46 || { ret=$$?; \ 47 echo "*** Maybe you need to increase the filesystem size (BR2_TARGET_ROOTFS_EXT2_SIZE)" 1>&2; \ 48 exit $$ret; \ 49 } 50endef 51 52ifneq ($(BR2_TARGET_ROOTFS_EXT2_GEN),2) 53define ROOTFS_EXT2_SYMLINK 54 ln -sf rootfs.ext2$(ROOTFS_EXT2_COMPRESS_EXT) $(BINARIES_DIR)/rootfs.ext$(BR2_TARGET_ROOTFS_EXT2_GEN)$(ROOTFS_EXT2_COMPRESS_EXT) 55endef 56ROOTFS_EXT2_POST_GEN_HOOKS += ROOTFS_EXT2_SYMLINK ROOTFS_EXT2_SHRINK 57endif 58 59$(eval $(rootfs)) 60